The invention relates to an irradiation device for proton and / or ion beam therapy
according to the generic term
of claim 1. Such also referred to as therapy facilities
Facilities are known, they usually have one on the
Base of a cyclotron or synchrotron realized radiation source
with a beam guiding device
and at least one therapy room into which a therapy beam
is initiated. This is directed to a treatment location
to which a patient to be treated can be placed.
the acceleration of and use of radiation during the
Patient irradiation becomes secondary radiation
generated. When braking ions are considered in the here to be considered
Energy range up to several 100 MeV per nucleon in nuclear reactions
(Spallation reactions or fragmentation of the projectile or target nuclei)
Neutrons, protons, light ions and gamma rays generated. The
Shielding the secondary radiation
is essentially dominated by the produced neutron radiation.
is known to be the largest part
an accelerated therapy beam is deposited in the tissue and
there one - in
Direction of the therapy beam seen - strongly forward
Cones generated by neutron radiation. Most of the generated
Neutrons leave the patient without interaction. Because the neutron radiation
can have very high energies and the tenth value layer thickness for high energy
Neutron radiation e.g. in normal concrete is one meter, is
the incident therapy beam a significant shielding
Structural radiation protection design must meet this radiation physics
and geometric constraints.
the planning of treatment centers, in particular clinics for particle therapy, in
which irradiation facilities of the type mentioned here used
be, often occurs
the problem on having this facility in an existing infrastructure
or within a larger treatment center
has to be built. Particle therapy facilities with cyclotrons and synchrotrons
have due to the elaborate
Accelerator technology and the associated beam guiding devices
To provide the therapy beams often requires a branched
Systems of beam guides,
to supply the beams of the radiation source treatment rooms. Thereby
is the access to these rooms
it can not be avoided that access to a therapy room in the
Range of neutron radiation of the therapy unit is arranged,
heavy shield doors
need to be installed
on the one hand increase the space requirement, on the other hand, the access to
The invention therefore is to provide an irradiation device,
which avoids the disadvantages mentioned here.
This object is achieved by an irradiation device for the proton
and / or ion beam therapy with a radiation source proposed,
having the features mentioned in claim 1. It includes one
Beam guiding device and
at least one provided with a treatment location and an access
Therapy room in which a therapy beam for the treatment of a patient
one is headed. The irradiation device is characterized
from that different levels are provided. Here is the therapy room
arranged in a first level. The therapy beam will be from a
above or below this level lying second level in the
Therapy room initiated and directed to the treatment site,
that the therapy beam is directed away from the entrance. As a result of that
Parts of the irradiation device arranged on different levels
space requirements can be significantly reduced. In addition, can
the beam guiding device
be moved out of the plane in which the therapy room arranged
is. This allows access to the therapy room independently of
the beam guide
become. In the irradiation device according to the invention
It is envisaged that in the therapy room open to the treatment
Shielding is provided. This protects the other areas of the
Therapy room before the radiation. The access to the therapy room will be
arranged on the side facing away from the treatment of the shield,
so that laterally offset to the treatment beam running in the therapy room
and for shielding at least one of access to the treatment site
Maze can be provided. This maze is made by the
Therapy beam not hit. Also the neutron radiation, the
from the place of treatment, the labyrinth does not hit. Access
to the therapy room so can be reflected only through the maze before
Beams are protected,
in particular can
heavy shield doors
omitted. This results in a simple and quick access to the
Due to the fact that the neutron radiation generated in the treatment room in the area of the treatment site does not have the access and the labyrinth between access and treatment site, as in the therapy room according to the DE 102 35 116 A1
If this is the case, the shielding effort can be reduced. This reduces the space requirement of the irradiation device.
a preferred embodiment of
Irradiation device is provided that between the access
and the treatment site on both sides of the shield a labyrinth
is provided. One of them can be used as access and the other
be used as an outlet, allowing the use of the therapy room
can be optimized: The removal of patients from the therapy room
does not hinder access, allowing a quick change of patient
Another preferred embodiment
The irradiation device is characterized in that spaces that
the pre- and post-treatment of patients or for the stay
arranged by other persons also on the first level
in which the therapy room is located. This allows an optimization of the
Procedure for therapy preparation (computed tomography, X-ray for
Position verification, etc.) and to carry out the therapy.
The irradiation device is characterized in that the
Although the therapy beam entering the therapy room reaches the treatment site,
but not on the mentioned rooms
is directed. These are therefore not by the therapy beam
and the neutron radiation produced in the treatment charged.
It does not even require a special shielding between
the entrance area and the mentioned rooms, because the therapy room
can be arranged so that the neutron radiation, for example
is directed to the soil, where a burden on patients, treatment staff
and avoided by people who operate the irradiation facility
a further preferred embodiment
the irradiation device is provided that the radiation source
is arranged in a third level. Due to the fact that the irradiation device
is spread over several levels, and that here is another level
the individual elements such as radiation source, beam guiding device
and therapy rooms
almost on top of each other
nested to minimize space requirements. It remains
provided that the directed to the treatment site beam of
is directed away, in which patients and other people themselves
Embodiments emerge from the remaining subclaims.
The invention is explained in more detail below with reference to a drawing. It
1 a schematic diagram of an irradiation device in longitudinal section;
2 a top view of the in 2 illustrated irradiation device,
3 a first embodiment of a therapy room in plan view;
4 a second embodiment of a therapy room in plan view;
5 a number of therapy rooms according to 3 in an arcuate arrangement;
6 a number of therapy rooms according to 4 in an arcuate arrangement;
7 a number of therapy rooms according to 4 in parallel arrangement and
8th a number of therapy rooms according to 4 in a mirror image arrangement.
The schematic diagram according to 1 is an irradiation device 1 to take that a radiation source 3 , a beam guiding device 5 and a therapy room 7 with a treatment location 9 includes, on which a patient 11 a therapy beam 13 is suspendable. The schematic diagram shows that the therapy room 7 is located on a first level E1, while the beam guiding device 5 on a second level E2 and the radiation source 3 are arranged on a third plane E3, wherein the planes E2 and E3 are arranged here below the first plane E1. But it is very well conceivable that the beam guiding device 5 and the therapy room 7 below the radiation source 3 can be arranged.
Next to the therapy room 7 is a room 15 indicated, which can serve the patient preparation, and in which are operating personnel for the irradiation device 1 can stop.
The illustration shows that the radiation source 3 , the beam guiding device 5 and the therapy room 7 , as well as more of the irradiation device 1 assigned rooms, here the room 15 can be arranged one above the other, which leads to a significant space savings. Moreover, it turns out that the beam guiding device 5 here below the therapy room 7 is arranged and thus access to the therapy room 7 in no way disturbs. At the irradiation facility 1 ge Mäss 1 is provided that access 17 in the transition area between the room 15 and the therapy room 7 located.
Because of the therapy beam 13 the therapy room 7 from left to right goes through, the access becomes 17 in no case from the therapy beam 13 affected. Also beyond the treatment site 9 given neutron radiation 19 does not apply to access 17 , Rather, it gets into the therapy room 7 subsequent soil 21 directed, which also above the therapy room 7 is provided. So it becomes clear that - in the direction of the therapy beam 13 seen - beyond the treatment site 9 no special shielding is to be provided because, as I said, the neutron radiation 19 in the soil 21 is discharged and thus not to the room 15 can reach the - in the direction of the therapy beam 13 seen - on the opposite side of the therapy room 7 to the treatment site 9 is arranged.
The figure also clearly shows that access 17 neither with the therapy beam 13 still with the neutron radiation 19 is charged.
The side view can be seen that the beam guiding device 5 is formed so that a partial beam T of the radiation source 3 from below through the floor B of the therapy room 7 initiated and deflected there so that it is parallel to the ground B, ie horizontally in the direction of the treatment site 9 runs.
The deflection of the partial beam T can also be chosen so that this at an angle in the therapy room 7 enters, or in such a way that it is within the therapy room 7 is deflected so that it is not parallel to the ground B but at an angle to this. Thus, the therapy beam runs 13 also in the treatment center 9 at an angle to the ground B.
It turns out that the irradiation device 1 can also be configured variably in this aspect. It is also possible that the therapy beam 13 at an angle through the ceiling the therapy room 7 enters or is deflected in such a way that it is not parallel to the ground B but obliquely from above to the treatment site 9 meets. This radiation profile has the advantage that the therapy beam 13 and the neutron radiation 19 from above into the earth area 21 be directed so that optimal absorption is ensured. With a radiation direction obliquely upwards would have to be ensured that the soil 21 over the therapy room 7 is thick enough or that there is additionally provided a shield.
The fact that here also the possibility is created, the partial beam T and in particular the therapy beam 13 at an angle to the place of treatment 9 In some cases gantry can be dispensed with.
The illustration also shows that the entrance area E of the partial beam T into the therapy room 7 at a distance to the entrance 17 in the therapy room 7 and at a distance to the irradiation site 9 lies. It becomes particularly clear that the area between the entrance 17 and the entry area E is free, because the beam guiding device 5 is arranged below the bottom B.
In 1 is implied that the room 15 Part of a treatment center, research center or clinic 23 can be.
Also above the therapy room 7 is soil 21 , By the arrangement below the earth level 25 can also be shielded by concrete and other materials above the therapy room 7 be reduced to a minimum.
Overall, high Abschirmmassen within the irradiation device 1 and the clinic 23 be avoided because natural shielding materials, namely soil 21 , can be used, which reduces additional costs in the device, but also in the dismantling.
Overall, there are the following advantages:
By the arrangement of the elements of the irradiation device 1 For example, at different levels E1, E2 and E3 it is possible to use the beam guiding device 5 in a different level than the therapy room 7 provide access so that access 17 to this and rooms 15 related to the use of the therapy room 7 are necessary, can be arranged optimally, and the process for therapy preparation and for performing the therapy is undisturbed. In addition, the structural radiation protection for the radiation source 3 , the beam guiding device 5 and for the therapy room 7 guaranteed. Shielding materials are used very efficiently. In particular, expensive materials such as concrete and the like can be replaced by soil. In addition, the individual elements of the irradiation device 1 arranged compactly and the use of space optimized. Incidentally, the connection to existing treatment and research centers, in particular clinics is possible without it there would be additional radiation exposure by therapy beams or neutron radiation.
2 shows the in 1 reproduced irradiation device 1 in plan view. More clear The radiation source is recognizable here 3 which comprises a pre-accelerator V, also called LINAC, and a synchrotron S. The radiation source 3 is in the lowest level E3.
Above this level, the beam guiding device is located in the plane E2 5 with several beam branches 27 . 29 and 31 , Above level E2 there are four indicated therapy rooms 7.1 . 7.2 . 3.7 and 4.7 ,
From the illustration according to 2 it becomes clear that, from the radiation source 3 seen from beyond the beam branches 27 . 29 and 31 Sub-beams T are given to the individual therapy rooms 7.1 to 4.7 be forwarded.
Since the therapy rooms are designed identically here, in the following only a therapy room 7 described. The further explanations are based on the in 2 on the far right shown therapy room 7.1 respectively.
Access 17 to the therapy room 7 is oriented so that it points in the direction of the sub-beam T, wherein from the explanations to 1 it is clear that the partial beam T below the bottom B of a therapy room 7 runs and only in the entrance area E - here from below - in the therapy room 7 entry. It will be readily apparent that such a beam introduction into a therapy room can also be made from above.
In the illustration according to 2 is the isocenter at the treatment site 9 indicated by a dot. On this is the entry area E in the therapy room 7 entering therapy beam 13 directed. Beyond the treatment site 9 given neutron radiation 19 is from access 17 directed away and enters the therapy room 7 surrounding soil 21 one. It is also clear here that the access 17 neither through the therapy beam 13 still by the neutron radiation 19 is charged.
The entry area E is from one towards the treatment site 9 open, quasi U-shaped shield 33 surround. From access 17 towards the treatment site 9 Seen, located next to the shield 33 at least one labyrinth L. In the in 2 illustrated embodiment are right and left of the shield 33 one labyrinth each L is provided, one of which is used as access and the other as an output to optimize the treatment process.
3 shows one 2 apparent therapy room 7 in an enlarged view. The same parts are provided with the same reference numerals, so that reference is made to the preceding description.
The therapy room 7
is from a conventional shielding wall 35
surrounded, for example, by a one meter thick concrete wall. The thickness of the wall 35
can be adapted to the different use cases; as well as the shielding material. So it is for example from the DE 103 12 271 A1
known to use plaster for shielding. Outside the therapy room 7
there is soil 21
In the presentation according to 3 is the access on the left 17 the therapy room 7 given. Inside it is at a distance to the entrance 17 the entry area E of the in the 1 and 2 to see sub-beam T shown. This is from a practically in the middle of the therapy room 7 located shielding 33 surround. From the beam tube shown here 37 with the usual deflection and scanning components enters the therapy beam 13 out. He is on the treatment site 9 directed, on which a couch for a patient is provided here. By a double arrow 39 is indicated that the couch can be swiveled.
From the jet pipe 37 and out of the direction of the treatment site 9 open shield 33 occurs the therapy beam 13 and hits the treatment site 9 , Beyond the treatment site 9 given neutron radiation 19 is from access 17 directed away and steps through the wall 35 in the soil 21 one.
At the in 3 illustrated embodiment is left and right of the shield 33 - in the direction of the therapy beam 13 Seen - each provided a labyrinth L, which serves, from the treatment place Be 9 intercept reflected radiation. This makes it possible to access 17 without realizing a heavy shielding door, allowing accessibility to the treatment site 9 relieved and accelerated.
In the embodiment shown here is still provided that the shield 33 in their place of treatment 9 opposite area, which is also to access 17 has a shield reinforcement 41 preferably made of iron.
The left and right of the entrance area E and the shield 33 lying labyrinths L within the therapy room 7 get through here on the inside of the wall 35 and on the outside of the shield 33 provided stages 43 and 45 realized. It is also conceivable, however, to provide projecting wall sections here in the course of the labyrinth L.
From the top view 3 it can be seen that the therapy room 7 is formed symmetrically, wherein the shield 33 the entrance area E surrounds symmetrically.
4 shows a modified embodiment of a therapy room 7 , The same parts are provided with the same reference numbers. In this respect, reference is made to avoid repetition to the preceding description.
It becomes clear that the second embodiment of the therapy room 7 is formed asymmetrically. The basic structure is identical:
The therapy room 7 is from a wall 35 surrounded, which may consist of conventional shielding concrete or the like. Outside the therapy room 7 is soil 21 , Left in 4 is the access 17 to the therapy room 7 to see. At a distance from this is the entrance area E, in which a partial beam T, as in the 1 and 2 was explained through the floor of the therapy room 7 in whose interior occurs. He is through a standard beam pipe 37 towards the treatment site 9 directed, with the therapy beam 13 from the jet pipe 37 Seen from the right exit, so that the access 17 is not charged in any way. In the area of the treatment site 9 resulting neutron radiation 19 enters the wall 35 into the ground 21 , so that it can be dispensed with a particularly strong shielding by concrete or the like.
The entry area E is through to the treatment site 9 open shield 33 surrounded, above the shield, a labyrinth L is created, here in the course of the labyrinth protruding wall sections 47 having. It would also be conceivable here, however, to provide stages, as is shown by 3 was explained.
The therapy room 7 is very compact, because on a below the shield 33 located labyrinth and part of the shield through a portion of the wall 35 is formed.
Also at the in 4 illustrated embodiment thus occurs the therapy beam 13 through the floor into the therapy room 7 one. In principle, an introduction through the ceiling would be possible. Beam guiding devices, as they are based on 1 and 2 have been explained, are thus below or above the therapy room 7 and therefore interfere with access 17 not, neither from the therapy beam 13 still from the neutron radiation 19 is affected. In the area of the treatment site 9 resulting stray radiation is intercepted by the labyrinth L so effectively that on heavy shield doors in the area of access 17 can be waived.
Based on 5 to 8th Different arrangements of therapy rooms will be explained.
5 shows a number of symmetrically constructed therapy rooms 7 as they are in the 2 and 3 already explained. They are all identical and have symmetrical to the central axis of the therapy room 7 arranged labyrinth L on which a connection between the access 17 and the treatment site 9 create and right and left at the shield 33 lead past.
In all cases was on the representation of the jet pipe 37 omitted, because here it is only on the arrangement of the therapy rooms 7 arrives. These are placed as close as possible to each other, so that there are virtually touch points and common wall areas. The accesses 17 all therapy rooms 7 lead to a room 15 , which is used for the preparation and care of patients and also X-ray areas 49 and storage rooms for patients, as well as switching rooms 51 for medical technical assistants, the irradiation facility 1 , in particular the individual therapy rooms 7 assigned devices, operate and monitor. The X-ray areas 49 serve in particular the position verification of patients. Here it is expressly pointed out that X-ray diagnostics for position verification also in the therapy rooms 7 is feasible.
The therapy rooms 7 are according to 5 Arced to the common space 15 to be able to make optimum use of it, and the total space required for the therapy rooms 7 to a minimum. These are, as indicated by a line, also of soil here 21 surrounded so that downstream from the treatment site 9 given neutron radiation 19 from soil 21 intercepted and can be dispensed expensive shielding this.
6 shows another embodiment of an array of therapy rooms 7 , There are here therapy rooms arranged arcuately, as they are based on 4 were explained. So here it is, unlike in 5 , asymmetric treatment rooms arranged arcuately, their entrances to a common space 15 in which patients are subject to care and storage. In addition, also here X-ray areas 49 are provided and not reproduced in detail here switching rooms for operating the irradiation device 1 and for the treatment of patients in the therapy rooms 7 ,
Also in the embodiment shown here, as in 2 and 5 that the rapieräume 7 arranged so that the therapy beams 13 and neutron radiation 19 are directed to the outside and on the therapy rooms 7 surrounding soil 21 to meet. The space 15 is neither through the therapy beam 13 The individual therapy rooms are still covered by neutron radiation in the area of the treatment areas 9 can arise, burdened.
7 finally shows an irradiation device 1 with a number of therapy rooms 7 as they are based on 4 were explained. So these are asymmetric therapy rooms 7 with only one labyrinth L.
From the illustration according to 7 is how out 4 seen that in the area of the treatment site 9 a bulge is given, but by the way the therapy rooms 7 have mutually parallel side walls. In the presentation according to 7 are the therapy rooms 7 arranged parallel to each other and offset in the longitudinal direction to each other, so that the parallel wall areas of two adjacent therapy rooms each lie against each other and thus a minimal space requirement is given.
The accesses 17 the therapy rooms 7 lead to a room here too 15 , the X-ray areas 49 or may include switch rooms not shown in detail here.
Again, the arrangement and orientation of the therapy rooms 7 so chosen that the therapy rays 13 and neutron radiation 19 from the room 15 is directed away from the soil surrounding the therapy rooms 21 is shielded.
Here, too, the therapy beams 13 and the neutron radiation 19 the access 17 Do not burden, can be dispensed with shield doors, allowing easier and faster access to the treatment sites 9 is possible. However, in the asymmetric therapy rooms 7 assume that the labyrinth L can only be used alternately as an input or output.
In 8th Finally, an embodiment is shown, in which four therapy rooms 7 an irradiation device 1 are shown. These are mirror images of an imaginary center plane M arranged, with the treatment rooms are formed mirror images of right and left of the median plane M: In the right of the median plane M lying therapy rooms, the labyrinth L is left of the shield 33 of the entry area E, at the left of the median plane M lying therapy rooms to the right. The accesses 17 The therapy rooms in turn lead to a common room 15 in which patients can be pre- and post-treated. Again, there are x-ray areas 49 to recognize. It can also switch rooms here 51 are provided, which are not shown here.
Also here are the therapy rooms 7 compactly arranged close together, each ensuring that the therapy beams 13 and the neutron radiation 19 the accesses 17 and the common room 15 not meet. Rather, the neutron radiation 19 each directed to the outside and is from the the therapy rooms 7 surrounding soil 21 intercepted.
Overall, it turns out that the irradiation facility 1 different therapy rooms 7 may be arranged in different ways to each other. Symmetrically structured therapy rooms with two labyrinths and asymmetrically structured treatment rooms, each with a labyrinth, can be used. It is also possible - as needed - to combine symmetrical and asymmetrical therapy rooms to ensure optimum space utilization. In any case, it is guaranteed that at least the therapy rooms 7 and the beam guiding devices 5 are arranged at different levels, so the entrances 17 to the therapy rooms 7 can be optimally arranged. The beams are each at a distance to the boundary walls of a therapy room 7 initiated in its interior, so that each within the therapy rooms 7 an entrance area E through its own shielding 33 can be surrounded and access 17 in front of the therapy beam 13 and the neutron radiation 19 is protected.
Overall, it turns out that the irradiation facility 1 is very compact and that the distribution of therapy room 7 , Radiation source 3 and / or beam guiding device 5 at different levels, as it were a nesting of the elements of the irradiation device 1 allowed, which leads to a very compact design. In addition, the therapy rooms 7 the irradiation device 1 designed so that the beam does not pass through a side wall of the therapy room 7 but through the floor B or the ceiling of the same into the interior and introduced to the treatment 9 can be directed. This makes it possible to access 17 so that this neither by the therapy beam 13 still by neutron radiation 19 is loaded and a labyrinth L between the access 17 and the treatment site 9 can be created. This can be symmetrical to the entrance area E of the beam in the therapy room 7 be formed and have an inlet and an outlet. The therapy rooms become even more compact if only a single labyrinth L is provided, which serves as an entrance as well as an exit.
Because of the therapy beams 13 and in particular the neutron radiation 19 from access 17 and from the entrance upstream rooms 15 is directed away, the irradiation device 1 close to a treatment or research center and to a clinic 23 be established. This eliminates expensive shielding measures, because the therapy beam 13 and the neutron radiation 19 in the therapy room 7 surrounding soil 21 penetrate and be intercepted by this.
Such trained therapy rooms 7 can be arranged close to each other arcuate or parallel to each other, with a staggered juxtaposition of therapy rooms 7 is possible. This also allows multiple therapy rooms 7 a common room 15 be allocated, which further optimizes the use of space.
Especially from the 7 and 8th It is clear that in the arrangement of therapy rooms shown here, wall sections can be made thinner or completely dispensed with in order to save shielding material and space. This applies in particular in the areas in which wall sections of adjacent therapy rooms are adjacent to one another. This often results in a wall thickness that exceeds the thickness required for the desired shielding.